# SDR 2017FA0000518

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 17, 2017
- Submitted: October 18, 2017
- Operation: General aviation
- Aircraft: [N513WF](https://openairdocs.org/aircraft/N513WF), registered now
- Make and model: Cessna 172S
- Registry model: [Cessna 172S](https://openairdocs.org/model/cessna-172s) (OpenAirDocs)
- Aircraft serial: 1729756
- Aircraft time: 4,464 hours
- Engine: Lyc IO360L2A
- Engine time: 1,174 hours
- Propeller: Mcauly 1A170DM
- System (JASC): [8530 · Reciprocating Engine Cylinder Section](https://openairdocs.org/jasc/8530)
- Part: Cylinder Head
- Condition: Cracked
- Location: Engine
- Part time: 1,174 hours
- Stage of operation: IN
- How discovered: V
- Nature of condition: R
- Precautionary procedure: E
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2017FA0000518

## Discrepancy

THREE OF THE FOUR CYLINDERS WERE CRACKED AT THE CROWN OF THE HEAD. CRACKS WERE VISIBLE BETWEEN THE CYLINDER FINS WITH EXHAUST PRINTING VISIBLE.

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